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Missouri Income Tax Guide

0% to 4.7% bracketsMissouri's 2026 estimated-tax form indexes each threshold and keeps the top marginal rate at 4.7%.
$16,100 single deductionMissouri's 2026 estimate instructions use the federal standard-deduction amounts.
Two cities levy earnings taxesKansas City and St. Louis obligations can be represented with the calculator's manual local-rate input.
Official Sources2026 Missouri estimateMissouri income taxFederal-tax deductionIRS
2026 Missouri estimateMissouri income taxFederal-tax deductionIRS
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How Missouri taxes work

Missouri AGI is simplifiedSupported income is reduced by the regular 2026 standard deduction before the state schedule is applied.
The indexed 2026 bands are modeledThe first $1,348 is untaxed, six narrow bands follow, and taxable income above $9,436 reaches 4.7%.
Federal-linked deductions are currentThe calculator uses $16,100 single/separate, $32,200 joint, and $24,150 head of household.
City earnings tax remains manualEnter a verified Kansas City or St. Louis rate only when it applies; location is not inferred.
Federal-tax and capital-gain adjustments are excludedThose deductions and subtractions require liability or income-character details beyond the streamlined inputs.

Common Missouri tax questions

Does Missouri tax all income at 4.7%?No. The first band is untaxed and the next six bands use rates from 2% through 4.5%.
Does Missouri use the federal standard deduction?Yes. The official 2026 estimate instructions list the same basic status amounts.
Is Missouri's federal-income-tax deduction included?No. It depends on the actual federal liability and Missouri limitations.
Are Kansas City and St. Louis taxes automatic?No. Use the optional local-rate field only with a rate verified for your work and residency facts.
Is the capital-gain subtraction included?No. Generic other income cannot identify qualifying Missouri capital gain.
Is this Form MO-1040?No. It is a planning estimate rather than a complete state or city return.